// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
#include <tests/expression/fuzzer/arg_types_generator_test_utils.h>

#include <gtest/gtest.h>
#include <pollux/expression/signature_binder.h>

namespace kumo::pollux::fuzzer::test {

void assertReturnType(
    const std::shared_ptr<ArgTypesGenerator>& generator,
    const exec::FunctionSignature& signature,
    const TypePtr& returnType) {
  FuzzerGenerator seed{0};
  const auto argTypes = generator->generateArgs(signature, returnType, seed);

  // Resolve return type from argument types for the given signature.
  exec::SignatureBinder binder(signature, argTypes);
  POLLUX_CHECK(
      binder.tryBind(),
      "Failed to resolve {} from argument types.",
      returnType->toString());
  const auto actualType = binder.tryResolveReturnType();
  EXPECT_TRUE(returnType->equivalent(*actualType))
      << "Expected type: " << returnType->toString()
      << ", actual type: " << actualType->toString();
}

void assertEmptyArgs(
    std::shared_ptr<ArgTypesGenerator> generator,
    const exec::FunctionSignature& signature,
    const TypePtr& returnType) {
  FuzzerGenerator seed{0};
  const auto argTypes = generator->generateArgs(signature, returnType, seed);
  EXPECT_TRUE(argTypes.empty());
}

} // namespace kumo::pollux::fuzzer::test
